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The Ontario Natural Building Coalition is an advocacy group of designers, builders & homeowners working to promote healthy, high performance natural building strategies in the construction industry.

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Thank you to our 2019 Natural Building Conference Sponsors:


Job Postings

Professional Members - Contact us to list job postings available within your company! View our current Job Postings

Find A Natural Building or Straw Bale Professional

View our Business Directory for a complete list of designers, builders and more

Announcing the NEW Straw Bale Apprenticeship Program

The ONBC in partnership with The Endeavour Centre is now offering a new Apprenticeship Program for Straw Bale Builders. Click here for our Program details.

Discussion Lists

Natural Homes FOR SALE!!

From time to time, homeowners must sell their beloved straw bale home. ONBC members can make their listings visible here, check out the current Homes For Sale Listings.

Self-Serve Membership

Login to edit your profile, change address, renew your membership

Save the Date!

Our annual Natural Building Conference will be taking place on April

4 and 5, 2020, near Lakefield Ontario. Check back soon for more information and to register.

Annual Natural Homes Tour

The annual natural homes tour took place on Sunday Sept 29th - with 29 homes across Ontario participating. It was a fantastic opportunity to view a wide range of natural homes that featured straw bale, rammed earth, hempcrete and many more natural building methods, as well as alternative energy and heating systems and much more! The annual tour typically takes place the last Sunday of September - keep an eye on this site for a date for next year. 

A huge thanks to all the homeowners who voluntarily opened their homes to tour-goers and to all the people who took part in the tour. 

See a CTV news video clip of one of the homes on our 2019 tour.


The 2019 Ontario Natural Building Coalition's annual

Natural Building Conference & AGM 2019 - over for another year.

This year's theme was: "Healthy Homes"

This year's conference theme was "Healthy Homes".  For our technical content, we were excited to tap into our own roster of professional members to share their expertise on working with healthy, natural materials. How to presentations included material content data research, deciphering MSDS data as well as the famous ‘Red List’. We also pursued presentations by experts on the microbiome currently doing research in the US. There were case studies of a recent renovation as well as the results of fire and water damage to a straw bale building. 

Many thanks to all our presenters, sponsors and attendees - see you all next year!

A big thank you to our 2019 conference sponsors!







See photos of the 2018 conference.

Photos of the 2016 conference here.

Click here for photos of the 2015 conference.

Click here for an article and photos of the 2014 conference.


Visit our Natural Building Gallery to see houses built out of straw, wood & earth!

A Natural Home Tours Thank You

Over the years, many homes and buildings have participated in our Natural Building Annual tour.

Many of the homes that have been featured were models of innovation and energy efficiency and featured living roofs, natural clay wall finishes, rainwater catchment systems, grey water systems, composting toilets, while others incorporated solar and wind electrical systems, high efficiency wood burning appliances, solar domestic hot water systems, as well as a variety of other interesting green technologies.

The Ontario Natural Building Coalition would like to thank all the volunteer homeowners who have over the years graciously opened their doors and welcomed tour-goers. The annual tour would not be possible without them!

Click here for an article about one of the homes on our recent tour.

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